@layer reset{*,:before,:after{box-sizing:border-box}*{margin:0}html{-moz-text-size-adjust:100%;text-size-adjust:100%;hanging-punctuation:first last}img,picture,video,canvas,svg{max-width:100%;display:block}input,button,textarea,select{font:inherit;color:inherit}button{cursor:pointer;background:0 0;border:0;padding:0}p,h1,h2,h3,h4,h5,h6{overflow-wrap:break-word}h1,h2{overflow-wrap:anywhere;-webkit-hyphens:auto;hyphens:auto;hanging-punctuation:first}ul[role=list],ol[role=list]{padding:0;list-style:none}[hidden]:not([hidden=until-found]){display:none!important}}@layer tokens;@layer base{html{background:var(--bg);color:var(--text);font-family:var(--font-body);font-optical-sizing:auto;scroll-padding-top:calc(var(--header-h) + var(--space-5));accent-color:var(--signal);font-size:100%}@media (prefers-reduced-motion:no-preference){html:not([data-motion=reduce]){scroll-behavior:smooth}}body{background:radial-gradient(70rem 40rem at 88% -8rem, var(--glow-violet), transparent 70%), radial-gradient(55rem 36rem at -12% 12rem, var(--glow-cyan), transparent 70%), radial-gradient(40rem 30rem at 60% 70rem, var(--glow-magenta), transparent 70%), var(--bg);min-height:100svh;font-size:var(--step-0);line-height:var(--leading-body);font-weight:var(--weight-body);font-variant-numeric:lining-nums proportional-nums;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-repeat:no-repeat;flex-direction:column;display:flex;overflow-x:clip}:root:not([data-theme=light]) body{font-weight:380}::selection{background:var(--selection);color:var(--text)}h1,h2,h3,h4{font-family:var(--font-display);font-weight:620;line-height:var(--leading-tight);letter-spacing:var(--tracking-display);text-wrap:balance;color:var(--text)}h1{font-size:var(--step-5);font-weight:650}h2{font-size:var(--step-3)}h3{font-size:var(--step-2);line-height:1.12}h4{font-size:var(--step-1);line-height:1.2}p,li{text-wrap:pretty}a{color:inherit;text-underline-offset:.18em;text-decoration-line:underline;text-decoration-thickness:1px;-webkit-text-decoration-color:color-mix(in srgb, currentColor 45%, transparent);text-decoration-color:color-mix(in srgb, currentColor 45%, transparent);transition:text-decoration-color var(--dur-fast) var(--ease-out)}a:hover{text-decoration-color:currentColor}:focus-visible{outline:2px solid var(--focus);outline-offset:2px;border-radius:var(--radius-1)}:focus:not(:focus-visible){outline:none}code,kbd,samp,pre{font-family:var(--font-mono);font-size:.88em}hr{border:0;border-top:1px solid var(--rule)}abbr[title]{text-underline-offset:.2em;-webkit-text-decoration:underline dotted;text-decoration:underline dotted}sup,sub{vertical-align:baseline;font-size:.72em;line-height:0;position:relative}sup{top:-.45em}sub{bottom:-.2em}table{border-collapse:collapse;font-variant-numeric:tabular-nums}::placeholder{color:var(--text-3);opacity:1}.katex{font-size:1.06em}.katex>math,math{font-family:Latin Modern Math,STIX Two Math,Cambria Math,math;font-size:1.04em}.katex .katex-mathml{clip-path:inset(50%)}.math-display{padding-block:var(--space-2);margin-block:var(--space-5);position:relative;overflow:auto hidden}.math-display .katex-display{margin:0}[data-topic]{--topic:var(--text-2)}[data-topic=statistics]{--topic:var(--t-statistics)}[data-topic=quantum]{--topic:var(--t-quantum)}[data-topic=relativity]{--topic:var(--t-relativity)}[data-topic=cosmology]{--topic:var(--t-cosmology)}[data-topic=spaceflight]{--topic:var(--t-spaceflight)}[data-topic=particles]{--topic:var(--t-particles)}}@layer layout,components,prose;@layer utilities{.sr-only{clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;position:absolute!important}.mono{font-family:var(--font-mono);letter-spacing:var(--tracking-mono);font-variant-numeric:tabular-nums}.label{font-family:var(--font-ui);font-size:var(--step-n1);letter-spacing:.01em;color:var(--text-3);font-weight:500;line-height:1.4}.signal{color:var(--signal-text)}.nowrap{white-space:nowrap}.wrap{width:min(100% - 2 * var(--gutter), var(--page-max));margin-inline:auto}.wrap-wide{width:min(100% - 2 * var(--gutter), var(--wide-max));margin-inline:auto}.wrap-text{width:min(100% - 2 * var(--gutter), var(--measure));margin-inline:auto}}
@layer tokens{:root{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg:#070a17;--bg-deep:#02040c;--surface-1:#0d1428;--surface-2:#142040;--text:#e8ecf7;--text-2:#aeb7d3;--text-3:#8f9bc0;--rule:#232d4d;--rule-ui:#61709c;--link:#8ecbff;--signal:#ff6a3d;--signal-text:#ff8257;--signal-dim:#ff6a3d29;--signal-ink:#070a17;--data-1:#d3daf0;--data-2:#7fb6e8;--data-3:#4f5c86;--focus:#8ecbff;--selection:#8ecbff4d;--scrim:#02040cbd;--t-statistics:#ffc861;--t-quantum:#b49cff;--t-relativity:#63d7ee;--t-cosmology:#ff8fe0;--t-spaceflight:#ffa36e;--t-particles:#6ee7b0;--glow-violet:#6a4cff47;--glow-cyan:#00b4d838;--glow-magenta:#ff3fa42e;--font-display:var(--font-archivo), "Archivo", "Helvetica Neue", Arial, sans-serif;--font-body:var(--font-literata), "Literata", Georgia, "Times New Roman", serif;--font-mono:var(--font-jetbrains), "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;--font-ui:system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--step-n2:clamp(.738rem, .729rem + .039vw, .76rem);--step-n1:clamp(.885rem, .86rem + .112vw, .95rem);--step-0:clamp(1.0625rem, 1.014rem + .217vw, 1.1875rem);--step-1:clamp(1.275rem, 1.193rem + .364vw, 1.484rem);--step-2:clamp(1.53rem, 1.403rem + .566vw, 1.855rem);--step-3:clamp(1.836rem, 1.647rem + .841vw, 2.319rem);--step-4:clamp(2.203rem, 1.931rem + 1.21vw, 2.899rem);--step-5:clamp(2.2rem, 1.95rem + 1.1vw, 2.9rem);--step-6:clamp(2.5rem, 2.1rem + 1.7vw, 3.4rem);--step-7:clamp(2.8rem, 2.2rem + 2.8vw, 4.4rem);--leading-body:1.72;--leading-tight:1.12;--leading-snug:1.3;--tracking-display:-.01em;--tracking-mono:.04em;--tracking-caps:.08em;--weight-body:400;--weight-body-strong:650;--space-1:.25rem;--space-2:.5rem;--space-3:.75rem;--space-4:1rem;--space-5:1.5rem;--space-6:2rem;--space-7:3rem;--space-8:4rem;--space-9:6rem;--space-10:8rem;--measure:32em;--gutter:clamp(1rem, .5rem + 2.2vw, 2.5rem);--page-max:90rem;--wide-max:72rem;--header-h:3.5rem;--tap:2.75rem;--radius-0:0;--radius-1:8px;--radius-2:16px;--radius-3:24px;--radius-round:999px;--dur-instant:0s;--dur-fast:.15s;--dur-base:.32s;--dur-slow:.6s;--ease-out:cubic-bezier(.2, 0, 0, 1);--ease-in-out:cubic-bezier(.65, 0, .35, 1);--z-below:-1;--z-base:0;--z-figure:10;--z-sticky:50;--z-header:100;--z-overlay:200;--z-dialog:300;--z-skip:400}:root[data-theme=light]{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--bg:#f5f6fb;--bg-deep:#e7eaf6;--surface-1:#eceffa;--surface-2:#e1e5f4;--text:#0a0f24;--text-2:#39415e;--text-3:#4f5878;--rule:#cdd3e8;--rule-ui:#7a83a1;--link:#1a5ab8;--signal:#e0441f;--signal-text:#b3321a;--signal-dim:#e0441f24;--signal-ink:#0a0f24;--data-1:#232a45;--data-2:#2f68a8;--data-3:#9aa3c0;--focus:#1a5ab8;--selection:#1a5ab833;--scrim:#f5f6fbd1;--t-statistics:#855500;--t-quantum:#5a3ccc;--t-relativity:#086a82;--t-cosmology:#a3207b;--t-spaceflight:#a8411a;--t-particles:#0a7350;--glow-violet:#6a4cff1f;--glow-cyan:#0096c81a;--glow-magenta:#ff3fa414}@media (prefers-reduced-motion:reduce){:root:not([data-motion=full]){--dur-fast:0s;--dur-base:0s;--dur-slow:0s}}:root[data-motion=reduce]{--dur-fast:0s;--dur-base:0s;--dur-slow:0s}}
@layer layout{.skip-link{top:var(--space-2);left:var(--space-2);z-index:var(--z-skip);padding:var(--space-3) var(--space-4);background:var(--text);color:var(--bg);border-radius:var(--radius-round);font-family:var(--font-ui);font-size:var(--step-n1);text-decoration:none;position:fixed;transform:translateY(-200%)}.skip-link:focus-visible{transform:none}main{flex:1;display:block}main:focus{outline:none}.article-grid{grid-template-columns:[full-start] minmax(var(--gutter), 1fr) [wide-start] minmax(0, 6rem) [main-start] min(var(--measure), 100% - 2 * var(--gutter)) [main-end] minmax(0, 2.5rem) [rail-start] minmax(0, 15rem) [rail-end] minmax(var(--gutter), 1fr) [full-end];display:grid}.article-grid>*{grid-column:main}.article-grid>.wide{grid-column:wide-start/rail-end}.article-grid>.full{grid-column:full}.article-grid>.rail{grid-column:rail}@media (max-width:68rem){.article-grid{grid-template-columns:[full-start] var(--gutter) [wide-start main-start] minmax(0, 1fr) [main-end rail-start rail-end wide-end] var(--gutter) [full-end]}.article-grid>.wide,.article-grid>.rail{grid-column:main}}}@layer components{.status-wrap{width:min(100% - 2 * var(--gutter), var(--wide-max));padding-block:clamp(var(--space-8), 12vw, var(--space-10));gap:var(--space-5);margin-inline:auto;display:grid}.status-title{font-size:var(--step-6);max-width:14ch;line-height:.98}.status-floor{width:100%;height:4.5rem;color:var(--text-3)}.status-text{max-width:34em;font-size:var(--step-1);color:var(--text-2);line-height:1.45}.status-links{gap:var(--space-2) var(--space-5);font-family:var(--font-ui);font-size:var(--step-n1);flex-wrap:wrap;display:flex}.status-links a{min-height:var(--tap);align-items:center;display:inline-flex}.status-button{min-height:var(--tap);padding-inline:var(--space-4);background:var(--text);color:var(--bg);border-radius:var(--radius-round);font-family:var(--font-ui)}}@layer prose{.prose{font-size:var(--step-0);line-height:var(--leading-body);color:var(--text);-webkit-hyphens:manual;hyphens:manual}.prose>*+*{margin-top:1.25em}.prose>p,.prose>ul,.prose>ol{max-width:var(--measure)}.prose h2{margin-top:var(--space-10);padding-top:var(--space-5);background:linear-gradient(var(--topic,var(--text-3)) 0 0) no-repeat 0 0 / 2.5rem 4px;font-size:var(--step-3);scroll-margin-top:calc(var(--header-h) + var(--space-4))}.prose h2+*{margin-top:var(--space-6)}.prose h3{margin-top:var(--space-7);font-size:var(--step-2);scroll-margin-top:calc(var(--header-h) + var(--space-4))}.prose h3+*{margin-top:var(--space-4)}.prose h4{margin-top:var(--space-6);font-size:var(--step-1)}.prose strong,.prose b{font-weight:var(--weight-body-strong)}.prose em{font-style:italic}.prose ul:not([role=list]),.prose ol:not([role=list]){padding-left:1.4em}.prose :is(ul,ol):not([role=list])>li+li{margin-top:.45em}.prose li::marker{color:var(--topic,var(--text-3))}.prose blockquote{max-width:var(--measure);padding-left:var(--space-5);border-left:3px solid color-mix(in srgb, var(--topic,var(--text-3)) 70%, transparent);color:var(--text-2);font-style:italic}.prose blockquote p+p{margin-top:.6em}.prose hr{margin-block:var(--space-8)}.prose table{width:100%;max-width:var(--measure);font-size:var(--step-n1);line-height:1.45;display:block;overflow-x:auto}.prose th,.prose td{padding:var(--space-2) var(--space-3);border-bottom:1px solid var(--rule);text-align:left;vertical-align:top}.prose th{font-family:var(--font-ui);font-size:var(--step-n1);color:var(--text-3);border-bottom-color:var(--rule-ui);font-weight:600}.prose td.num,.prose th.num{text-align:right}.prose code{background:var(--surface-1);border-radius:var(--radius-1);padding:.08em .3em}.prose a:not([class]){color:var(--link);-webkit-text-decoration-color:color-mix(in srgb, var(--link) 45%, transparent);text-decoration-color:color-mix(in srgb, var(--link) 45%, transparent)}.prose a:not([class]):hover{-webkit-text-decoration-color:var(--link);text-decoration-color:var(--link)}.prose>p:first-of-type{font-size:var(--step-1);line-height:1.5}}